Quasi 3-D inversion of electromagnetic data

Esben Auken, Anders V. Christiansen, Andrea Viezzoli, Bernhard Simon

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingspeer-review

Abstract

The spatially constrained inversion (SCI) produces quasi-3D modeling of geoelectrical and electromagnetic data using a 1D forward solution. Information migrates horizontally through spatial constraints and allows resolution of layers that would be locally poorly resolved and it greatly reduces the influence of noisy data. The constraints between models are constructed using Delaunay triangulation, where the length of the lattices scales the constraints between the model parameters. Note that constraints are not only applied along profile lines but also between profile lines. The triangulation also allows creation of data subsets suitable for parallel computing. The SCI algorithm has been applied to helicopter borne SkyTEM data and to demonstrate the generality of the algorithm we will in this study apply it to airborne frequency data (HEM) from Banda Aceh, Indonesia. The field case proves that the SCI produces consistent results that respect the 3D geological variations of the sedimentary settings and it does efficiently suppress along flight line inversion artifacts. .

Original languageEnglish
Title of host publication78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
PublisherSociety of Exploration Geophysicists
Pages1193-1197
Number of pages5
ISBN (Print)9781605607856
Publication statusPublished - 2018
Event78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008 - Las Vegas, United States
Duration: 9 Nov 200814 Nov 2008

Publication series

Name78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008

Conference

Conference78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
Country/TerritoryUnited States
CityLas Vegas
Period9/11/0814/11/08

Programme Area

  • Programme Area 2: Water Resources

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